When recruiting school and university leavers, Mr Duncombe says too many applications have contained spelling mistakes or poor grammar.

"Some people even used text speak in their cover letter," he says.

Even among those who appeared to be able to spell, he says that a written test, without access to a computer spellchecker, revealed further problems with spelling.

William Dutton, director of the Oxford Internet Institute at Oxford University, says that in some informal parts of the internet, such as Facebook, there is greater tolerance towards spelling and grammar.